#include <iostream>
using namespace std;

int main() {
	int n, m;
	cin >> n >> m;
	for (int i = 1; i <= n; i++) {
		for (int j = 1; j <= m; j++) {
			cout << "*";
		}
		cout << endl;
	}
	cout << endl;
	cout << endl;
	for (int i = 1; i <= n; i++) {
		for (int j = 1; j <= i - 1; j++) {
			cout << " ";
		}
		for (int j = 1; j <= m; j++) {
			cout << "*";
		}
		cout << endl;
	}
	cout << endl;
	cout << endl;
	for (int i = 1; i <= n; i++) {
		for (int j = 1; j <= i; j++) {
			cout << "*";
		}

		cout << endl;
	}
	return 0;
}
